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SRB-E-201ST - Emergency Stop + Safety Relay - SS IP65 Industrial Safety Control
| MOQ: | 1 |
| Price: | USD 100-10000/Piece |
| Standard Packaging: | 50*50*50mm |
| Delivery Period: | 3-7 |
| Payment Method: | T/T |
| Supply Capacity: | 1/piece in stock |
1. Product Overview
The Schmersal SRB-E-201ST is a modular safety relay engineered for monitoring emergency stops, safety gates, and light curtains in industrial automation. Featuring a stainless steel housing (IP67 rated), this DIN-rail mountable device complies with ISO 13849-1 PL e (Category 4) and IEC 62061 SIL 3 standards. Its dual-channel architecture monitors safety devices with force-guided contacts to ensure reliable shutdown during faults. Operating at 24V DC, the relay integrates LED status indicators for power, fault, and output states. Designed for harsh environments (-25°C to +60°C), the corrosion-resistant housing withstands oils, vibrations, and humidity, making it ideal for automotive, material handling, and robotic applications requiring fail-safe control logic.
2. Key Technical Parameters
- Safety Ratings:
- PL e (ISO 13849-1 Cat. 4)
- SIL 3 (IEC 62061, PFHD: 2.3×10⁻⁹/h)
- Electrical Specifications:
- Supply Voltage: 24V DC (19.2–28.8V)
- Safety Outputs: 2× semiconductor (0.5A) + 2× relay (5A)
- Input Channels: 2 independent (S11/S12, S21/S22)
- Response Time: ≤100ms
- Mechanical:
- Dimensions: 45×105×121mm (W×H×D)
- DIN Rail Mounting: EN 60715
- Environmental:
- IP67 (IEC 60529)
- Shock Resistance: 30g (IEC 60068-2-27)
- Diagnostics:
- Tri-color LED indicators
- Fault memory storage
- Certifications:
- UL 508, CE, UKCA
- DNV-GL for marine applications
3. Primary Applications
This relay safeguards critical machinery:
- Press Brakes: Dual-channel E-stop monitoring with manual reset
- Robotic Cells: Safety gate interlocking with position verification
- Conveyor Systems: Light curtain integration for material handling
- Packaging Lines: Two-hand control systems for pouch fillers
- CNC Machining: Tool changer guard monitoring
- Automotive Stamping: Emergency stop cascading across press lines
- Plastic Injection: Mold area guard locking
- Assembly Stations: AGV docking zone safety
Its SIL 3 certification ensures compliance in automotive OEM facilities, pharmaceutical plants, and offshore platforms where redundant safety is non-negotiable.
4. Functional Advantages
- Diagnostic Intelligence:
- Green/red/yellow LEDs visualize circuit status
- Cross-fault detection between channels
- Installation Efficiency:
- Plug-in screw terminals (0.2–2.5mm²)
- 22.5mm module width saves panel space
- Safety Assurance:
- Force-guided contacts (EN 50205)
- Automatic startup test
- Flexible Configuration:
- Supports E-stop, guard door, light curtain inputs
- Configurable reset modes (auto/manual)
- Durability:
- Stainless steel housing resists corrosion
-
100,000 mechanical operations
- Compliance Ready:
- Pre-certified templates for ISO 13850
- SILCL 3 per IEC 61508
5. Safety Functionality
Dual-Channel Operation:
- Input Monitoring:
- Cross-compares S11/S12 and S21/S22 signals
- Detects contact welding within 50ms
- Startup Test:
- Validates contact separation upon power-up
- Prevents restart with undetected faults
- Output Control:
- Safety outputs (13-14/23-24) enable machine operation
- Auxiliary contact (31-32) signals faults
- Reset Logic:
- Manual reset via external button
- Auto-reset after fault clearance
- Fault Management:
- Forces outputs open during discrepancies
- Stores last 5 faults with timestamp simulation
Safety Response Times:
- Input fault → Output deactivation: ≤80ms
- Contact separation: Guaranteed ≥0.5mm
- Undervoltage lockout: Activates below 19V DC
| Parameter | Specification/Value |
|---|---|
| Product Type | Emergency Stop Pushbutton (Twist Release) |
| Series | SRB-E |
| Contact Configuration | 2 NC (Safety Contacts) + 1 NC/1 NO (Auxiliary) |
| Safety Category (EN ISO 13849-1) | Cat. 4 / PL e (EN ISO 13849-1) |
| Performance Level (PL) | PL e (EN ISO 13849-1) |
| Stop Category | Category 0 (Uncontrolled stop per EN 60204-1) |
| Enclosure Rating (IP) | IP65 (Front side), IP54 (Housing) |
| Rated Operating Voltage (Ue) | 24–240V AC/DC |
| Rated Current (Ie) | 10 A (AC-15), 6 A (DC-13) |
| Electrical Life | 100,000 cycles (at rated load) |
| Mechanical Life | ≥ 1,000,000 cycles |
| Actuator Type | Ø 40 mm Mushroom Head (Red/Yellow) |
| Actuation Force | ≥ 80 N (Meets ISO 13850) |
| Release Mechanism | Key-operated Twist Release |
| Contact Block Material | Thermoplastic (PA) |
| Housing Material | Zinc Die Cast (RAL 7035 Grey) |
| Contact Material | AgCdO (Silver Cadmium Oxide) |
| Operating Temperature | -25°C to +70°C |
| Connection Type | Screw Clamp Terminals (Max. 2.5 mm²) |
| Mounting Style | Ø 22 mm Mounting Cutout |
| Approvals/Certifications | CE, UL 508, CSA C22.2 No.14, TÜV |
| Safety Standards | EN 60947-5-1, EN 60204-1, IEC 60947-5-1 |
| Self-Monitoring | Mechanically Linked NC Contacts |
| Actuator Locking | Key-Release Prevents Unauthorized Reset |
Packaging & Shipping
Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are
perfectly.
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